287450442 has 24 divisors (see below), whose sum is σ = 637294944. Its totient is φ = 93588264.

The previous prime is 287450431. The next prime is 287450461. The reversal of 287450442 is 244054782.

It is a junction number, because it is equal to n+sod(n) for n = 287450397 and 287450406.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 184918 + ... + 186465.

It is an arithmetic number, because the mean of its divisors is an integer number (26553956).

Almost surely, 2^287450442 is an apocalyptic number.

287450442 is an abundant number, since it is smaller than the sum of its proper divisors (349844502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

287450442 is a wasteful number, since it uses less digits than its factorization.

287450442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371434 (or 371431 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 36.

The square root of 287450442 is about 16954.3635091383. The cubic root of 287450442 is about 659.9651358994.

The spelling of 287450442 in words is "two hundred eighty-seven million, four hundred fifty thousand, four hundred forty-two".